102 Dentition of Pulmonate Mollusks. 
point of the first four laterals, and one smaller, outer cusp, bearing one 
small, sharp, bifid cutting point, representing the outer side cutting point — 
of the first four laterals. The sixth tooth has the largest cutting point 
bifid. The balance of the teeth are true marginals. They are very low, 
wide, with two low, wide cusps, bearing each several irregular, blunt, cut- 
ting points. 
The dentition of this species is, as would be anticipated, of the same 
type as the allied Cecilianella acicula, as figured by Lehmann (Lebenden 
Schnecken Stettins, p. 128, Pl. XIII, fig. 438,) and Sordelli, 1. c., fig. 26) 
The jaw, however, has no appearance of the “brace” like ribs described in 
that species by Sordelli (Atti Soc. Ital. Sc. Nat., XIIL, 1870, 49, Pl. I, fig. 
25’. The ribs are quite like those figured of Helix Lansingi (Terr, Moll, V),— 
although they are narrower. 
Lithotis. 
Lithotis rupicola, Blandf. Bombay. 
Referred by Pfeiffer to Sewccinea, but widely differing from 
that genus in not having an elasmognathous jaw. 
Jaw (Pl. XVI, fig. C) arcuate, with a depression or excavation in the 
centre of its upper margin; scarcely attenuated towards the ends; cutting 
edge with a decided median projection; anterior surface with vertical stria, 
but no trace of ribs. 
Lingual membrane (Pl. VII, fig. G): centrals with long and narrow base 
of attachment; the reflected portion has one long, median cusp, bearing a 
long cutting point; laterals like the centrals, but asymmetrical; the outer 
laterals have a bifid side cutting point; marginals a simple modification of 
outer laterals. 
Limicolaria. 
Limicolaria Numidica, Rye. 
Jaw thin, highly arcuate, smooth, ends attenuated. 
Lingual membrane not examined. 
(6) JAW WITH DECIDED STOUT RIBS. 
This section, also, is unsatisfactory, as the species included in 
it are not all so characterized. 
Anadenus, 
Anadenus ————? Himalaya Mountains. An undetermined 
species. 
The. jaw is thick, low, wide, slightly arcuate; ends but little attenuated; 
anterior surface with fourteen stout, unequal, separated ribs, denticulating 
either margin. 
